Oxyhydrogen-gas burner.



No. 869.071. PATENTED OCT. 22, 1907. A. B. DRA GER & H. W. G. SGHRUDEB... OXYHYDROGEN GAS BURNER.

APPLIOATION FILED JULY 30. 1906.

UNITED ATENT ()FFICE.

ALEXANDER BERNHARD DRAGER AND HANS WILHELM CHRISTIAN SGHRDDER, OF LIlBEOK, GERMANY, ASSIGNORS TO THE FIRM OF DRAGERWERK, HEINRICH AND BERNHARD nniienn, OF LUBEGK, GERMANY.

OXYI-IYDROGEN-GAS BURNER.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed July 30, 1906- $erial No. 323,380-

To all whom it may concern:

Be it known that we, ALEXANDER BERNHARD Dnii- GER and HANs WILI-inLM CHRISTIAN Scnnonnn, the former a citizen of the free and hanseatic town of Liibeck, and residing at Liibeck, in the German Empire, the latter being a subject of the Grand Duke of Mecklenburg- Schwerin and a resident oi Liibeck, in the German Empire, have invented a new and useful Oxyhydrogen- Gas Burner, of which the following is a specification.

This invention relates to oxyhydrogen-gas burners such as particularly used in calcium-light lamps. Especially with lamps of this latter class it has been proved as a drawback that the burners can only be adjusted to a very small degree, though very frequently luminous effects of varying strength are required in producing enlargement of pictures. The strength of light heretofore could only be varied in very narrow limits, by changing the pressure of the oxygen, which eiiects a sucking action on the burning-gas inside the nozzle. However this pressure dare not be raised beyond a certain not very great height, since otherwise the flame becomes unquiet and disagreeable noises are created. For these reasons heretofore it was necessary to make use of several lamps of different sizes, so as to enable one or the other to be chosen according to the required enlargement of the pictures.

According to the present invention this drawback is done away with by providing the burner with two or more suction nozzles, which are fed by adjustable separate pipes or branch pipes of a sole oxygen conducting main, and which suck from a common burning-gas conducting main, while the mixture of all the suction-nozzles enter a common mixing chamber. Thus by opening or closing single nozzles the efilciency of the burner can be changed within wide limits.

In Figure l is shown a burner made according to this invention in a longitudinal section and in Fig. 2 the burner is shown in connection with a lamp in elevation. Figs. 3 to 5 show the lamp in connection with different means to feed combustible gases.

In the form shown two nozzles t and on. are made use of. The feed-pipe c for the oxygen is connected to two branch pipes or and o, in which are valves or cocks p and q and which are connected with the nozzles i and an, arranged within the head or casing a. When the cocks p and q are opened oxygen is fed by way of the pipe 0, which is connected to a flask 3 Figs. 35 and of the branch-pipes n and o to the nozzles i and m, which project into the channel h of the casing a. One endof this channel is in connection with a source or reservoir '11) of combustible gas by means of the pipe (I. The

other end of the channel It leads into the mixing chamber a which is connected withthe burner c. The oxygen protruding from the nozzles i and m into the channel It draws the burning gas out of the pipe (Z by suction allow an equal amount or an unequal amount of oxygen to pass. We prefer to construct them for unequal amounts of oxygen, so as to provide for a wide range of adjustability. If for instance the nozzle 11 is constructed for 2 liters per minute and the nozzle m for 4 liters per minute, it is possible to effect a brilliancy of light by opening the cock p and closing the cock (1 corresponding with the consumption of 2 liters. If the cock (1 is opened and the cock 1) closed, the brilliancy is en-v hanced corresponding with the greater consumption of the oxygen, and when both cocks p and q are opened a still greater effect of light is obtained, since a consumption of 6 liters of oxygen results. Besides this adjustment the adjusting means known heretofore may be made use of, so as to obtain intermediate degrees of light-effects, between those obtained according to the present invention. For instance the pressure-reducing valve 1 attached to the flask s or reservoir containing the oxygen may be adjusted in known manner, to control the pressure and thereby regulate the feed of oxygen within narrow limits.

In case hydrogen is used as burning gas the reservoir 10 for this gas may also be provided with a reducing valve 9:, Fig. 3. In case of illuminating gas being made use of the flexible pipe (I is directly connected with the gas-pipe g, provided with a cock or valve t, Fig. 4. 1n the modification shown in Fig. 5, benzene is supposed to be used, the pipe (Z being connected with a reservoir 1) of benzene. In this case a burning gas is created by ir being sucked through the benzene.

We claim:

1. An oxyhydrogen burner comprising a head having a circular mixing-chamber and a mixing channel communicating therewith at one end, a fuel conduit communicating with the channel at the opposite end, an oxygen supply conduit having a nozzle communicating with the fuel conduit, a second oxygen supply conduit having a nozzle projecting into the channel, and means in the oxygen supply conduits to regulate the supply to the channel.

2. An oxyhydrogen burner comprising a head having a inixingchamber and a mixing channel communicating therewith at one end, a conduit for supplying oxygen having a nozzle projecting into the channel near said end, a gas conduit in the head communicating with the channel and having :1 portion thereof substantially parallel to the -pro ieeting into the mixing channel at channel and an oxygen supplycondnit having a nozzle projecting into said parallel portion of the gas-comluit 3. An ox h \'drogen hurnvr comprNi g a head having a circular mixingchamber and a s1: night mixingchannel communicating at one end through the periphery of the chamber. a conduit for supplying 0 n having a nozzle and end. a gas-conduit in the head communicating with the mixing channel and having a portion thereof parallel to the mixing chan- 10 no], an oxygen supply-conduit having a nozzle parallel to the aforesaid oxygen supply-conduit projecting into said parallel portion of the gas conduit at rightangles thereto and means in each oxygen-supply-conduit to regulate the supply.

ALEXANDER BERNHARD DRAGER. HANS WILHELM CHRISTIAN SCHRODER.

Witnesses JOHANN HEINRICH Dniionn, Fninnnicn PLi-vrn. 

